Threadless bolt



J. G. COLES THREADLESS BOLT Dec. 4, 1923. 1,476,491

Filed Oct. 7. 1922 Patented Dec. 4, 1923.

UNITED STA'TES'PATENT OFFICE..

TAKES? G. CLES, 0F HUPEWELI, PENNSYLVANIA, ASSQIGNOR 02E4 ONEfTm y T0 CHARLES H. EIGETNG'UR AND ONE-THIRD Norman, PENNSYLVANIA.

'ro WILLIAM-E. scu'rcrmm., 30TH or 'rHnEADLEss Bour.

Application led October 7, 1922. Serial 17o. 598,033.

thereof for holding objects firmly bound between the bolt head and nut. t

The primary object of the mventionresides in the provision of a threadless bolt wherein the bolt 1s provided with a plurality of adjacently positioned alternate annular ooves and ridges with a sectional nut having the inner faces of the section similarly grooved and ridged to be anchored on the bolt avainst an abutment or object by a collar or lband that frictionally encloses the nut section.

With the above general objects in view and others that will appear as the nature of the invention is better understood, the.`same consists of the novel form, combination and so arran ement of kparts hereinafter more fully descri d, shown in the accompanying drawing and claimed.

vn the drawing, wherein like reference characters designate corresponding parts throughout the` several views,

Figure 1 is a side elevational view of the bolt employed withthe nut showing the alternate annular Igrooves and ridges on the bolt shank,

Figure 2 is a side elevational view, partly shown in section of the bolt and nut associated with two objects for clamping the same together, there 4being' illustrated by dotted lines a clamp for moving the nutjse'cv-f-t'ionsinto engagement with the objects being vclamped and the locking collar partially enclosing the sections of the nut,

Figure 3 is a fragmentary side elevational view, similar to Fig. 2 showing the assem: bled bolt and nut lock,

Figure 4 is a cross sectional view taken on line IV-IV of Fig. 3 showin the lockin collar enclosing the sectionso the nut an threadless bolts and v engaging the head flanges carried by the nut sections,

Figure isla perspective view of one of the nut sections, and Figure 6 is a perspective view of the'lockmg collar.

eferring more in detail to the accompanylngdrawing, and particularly to. Fig. 1, there isillustrated a bolt embod ing a shank 1 having a head 2 at one end t ereof, .the opposite end of the shank 1 being provided over the desired len vh thereof with adjacently positioned annu ar grooves 3 defining intervening shoulders or ridges 4.

The nut associated with the fbolt 1 is of the sectional type, and ma be constructed of any number of 'sections esired, each section embodying an arcuate guide wall 5 carrying an arcuate head 6 upon one end thereof defining a shoulder' as clearly shown in Figs. 2 and 5. The inner face of each nut section is provided with adjacently positioned arcuate ribs 3 defining intervening recesses 4*.

The shank 1 of the bolt being passed through openings in the members 7 that are to be clamped together, has the head 2 thereof engaging the outer face of one of the members 7 while the several nut sections 5 are placed upon the annular-ly grooved end of the bolt shank juxtaposed to the adjacent face of the member 7. The clamp 8 shown by dotted lines in Figs. 2, positioned'exterlorly of one edge of the work 7 has the operating screw 9' thereof enga "n the head 2 of the bolt while the opposite ifurcated end legs 10 engage the s oulders 6 of the nut sections for forcinglthe latter into binding engagement with t e member 7 and positioning the ribs 3 in the desired grooves 3. vWhen so positioned, as illustrated 1n Fig. 2, an annular collar 11 is positioned over the louter ends of the walls 5 of the nut sections, the collar 11 enclosing the nut sections for holding the same in position upon the bolt. The clamp 8 may then be removed and the locking collar 11 forced over the side walls 5 of the n ut sections as shown in Fig. 3 for completely enclosing the same w1th the inner edge thereofengaging the shoulders 6 of the nut sections, the locking collar 11 yfrictionally engaging the nut sections for holding the interengaging annular grooves Y and ribs in mating relation. rlhe locking collarl 11 frictionally engaging the side wall sections 5 of thenut, the latter is securely anchored upon the annularl grooved end of the bolt shank which wil prevent longitudinal shifting movement of the nut upon the vbolt and capable oiwithstanding. shocks, jars or vibrations incident to the use thereof.

While there is herein vshovvn and described the preferred embodiment of the present invention it is nevertheless to be understood that minor Vchanges may be made therein 20 ders, a sectional nut having annular ribs on the inner face thereof to be received in the grooves of the bolt shank, and being of constant diameter throughout its length and a locking collar frictionally enclosing the nut sections.

2. In a device of the class described, a bolt having a shank annularly grooved at one end thereof defining spaced annular shoulders, a sectional nut havingannular ribs on'the inner face thereof to be received in the 'ooves ofthe bolt shank, and a locking co lar enclosing the sectional nut, each nut section having a head at one end thereof defining a shoulder that is adapted to be engaged by a clamping device for initial] holdin the same in position with the shou ders o the Aseveral nut sections engaging by the adjacent edge of the locking collar.

In testimony whereof li affix my si ature.

JAMES G. C0 ES. 

